| 摘要 |
PROBLEM TO BE SOLVED: To provide a lid which is low in cost, and exhibits good handleability and durability.SOLUTION: A lid includes a lid surface part, a cylinder part erected on the lid surface part, an opening part arranged on a tip end of the cylinder part, an arm part, and a plug part arranged on the arm part. One end part of the arm part is connected to a peripheral edge part A of the lid, and the other end part of the arm part is connected to a peripheral edge part B (B≠A). |
